312142 has 4 divisors (see below), whose sum is σ = 468216. Its totient is φ = 156070.

The previous prime is 312121. The next prime is 312161. The reversal of 312142 is 241213.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

312142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78034 + ... + 78037.

It is an arithmetic number, because the mean of its divisors is an integer number (117054).

2³¹²¹⁴² is an apocalyptic number.

312142 is a deficient number, since it is larger than the sum of its proper divisors (156074).

312142 is a wasteful number, since it uses less digits than its factorization.

312142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156073.

The product of its digits is 48, while the sum is 13.

The square root of 312142 is about 558.6966976813. The cubic root of 312142 is about 67.8345168728.

Adding to 312142 its reverse (241213), we get a palindrome (553355).

It can be divided in two parts, 312 and 142, that added together give a palindrome (454).

The spelling of 312142 in words is "three hundred twelve thousand, one hundred forty-two", and thus it is an iban number.